Right on! Well said, C. H.
george
"C.H.Ling" wrote:
>
> By just looking at the MTF I think I need to sell my 90/2 and 100/2 for a much
> cheaper Tokina 90/2.5. For me the result does not look convincible. I have no
> experience on most lenses but the Nikon 105/2.5 that I had was sure not
> comparable to
> my 100/2 in terms of resolution (and color too). I don't believe the Nikon I
> got was
> a bad one as it was in mint condition. Also, the Minolta 100/2 didn't get
> very good
> comment from the Minolta user whom I know.
>
> The most strange thing is the distortion. How can the 90/2 and 100/2 get up
> to 1.x%
> and the 35-80 Zuiko got 3.x% !! I remember the result from pop photo report
> the
> distortion of the Zuiko 35-80 at max is around 1.x%. May be they have
> different
> calculating method, but how come the Tamron 90/2.5 without figure? no
> distortion? If
> my memory serve in modern photography's test the Tamron has higher distortion
> than
> the Zuiko.
>
> Also, if you go deeper to the MTF curve, the Tamron go down to below ten at
> 40lp/mm
> at f2.5 which is much poorer than the Zuikos. The weighting calculation is
> totally
> not for me, I mostly shoot at F2 to F4 with my 90 and 100.
>
> I myself found the SQF in pop photo is the best lens test I have ever seen.
> Which
> seems more accurate and take care of more area on lens quality. Also, another
> lens
> quality - color and tonal rendering, is the most subjective one that not easy
> get
> agree among different people, to me the Zuikos always perform very well.
>
> I learn a new OM user here, who was a professional photographer and was a
> Nikon and
> Canon user for around 20 years. Now he only shoot for himself, he found the
> quality
> of Zuiko is better than the one he had used before. He sold all his Canon L
> and get a
> 4Ti, 3Ti, 18/3.5, 21/2, 50/1.2, 90/2, 100/2, 180/2.8, 300/4.5 and 1.4XA. He
> is very
> pleased with the Zuikos and me too.
>
> C.H.Ling
>
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